Who this is for: WooCommerce shops in Japan that sell to
registered businesses and must record the buyer's
適格請求書発行事業者登録番号 on orders and invoices.
What it does in plain terms:
When a company buys from your site, they often need their registration number on the transaction record. This plugin adds a field at checkout so customers can enter it. The number is saved on the order, shown in the admin order screen, and can appear in order emails.
Typical workflow:
- Install and enable the plugin.
- WooCommerce → Settings → インボイス登録番号 — choose optional or required.
- Customer enters their number at checkout (classic or Checkout Block).
- You see the number on the order when preparing invoices or bookkeeping.
Features:
- Checks that the value looks valid (
T + 13 digits) before the order is placed
- Works with WooCommerce Checkout Block
- Optional: show the number in customer order emails
This plugin does not check whether the number is really registered with the tax office. Use the
NTA public site for manual checks. A companion plugin for automatic checkout verification is pending
WordPress.org review (not published yet).
Works well with:
Enjoying this plugin? If it helps your shop,
a review on WordPress.org would mean a lot to us — thank you.